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The Collaborative International Dictionary
Polybranchia

Polybranchia \Pol`y*bran"chi*a\, n. pl. [NL. See Poly-, and Branchia.] (Zo["o]l.) A division of Nudibranchiata including those which have numerous branchi[ae] on the back.

Wikipedia
Polybranchia

Polybranchia may refer to:

  • Polybranchia (polychaete), genus of polychaetes in the family Spionidae
  • Polybranchia (gastropod), genus of sea slugs in the family Caliphyllidae
Polybranchia (gastropod)

Polybranchia is a genus of sacoglossan sea slugs, shell-less marine opisthobranch gastropod mollusks in the family Caliphyllidae.